Grease gun



FIG. 1 is a right side elevational view showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view of all three embodiments of my new design;

FIG. 6 is a bottom plan view of the first and second embodiments of my new design;

FIG. 7 is a right side elevational view showing another embodiment of my new design;

FIG. 8 is a left side elevational view of FIG. 7;

FIG. 9 is a front elevational view of FIG. 7;

FIG. 10 is a rear elevational view of FIG. 7;

FIG. 11 is a right side elevational view showing still another embodiment of my new design;

FIG. 12 is a left side elevational view of FIG. 11;

FIG. 13 is a front elevational view of FIG. 11;

FIG. 14 is a rear elevational view of FIG. 11; and,

FIG. 15 is a bottom plan view of FIG. 11. 

The ornamental design for a grease gun, as shown and described. 